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In a potentiometer of ten wires each of ...

In a potentiometer of ten wires each of `1m`, the balance point is obtained on the sixth wire. To shift the balance point to eighth wire, we should

A

increases the resistance in the primary circuit

B

decrease the resistance in the secondary circuit

C

decrease the resistance in series with the cell whose emf is to be determined

D

increases the resistance in series with the cell whose emf's is to be determined.

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The correct Answer is:
A
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